
.container{
    width: 100%;
    height: 100%;
    margin: auto;
}

.survey-card{
    width: 300px;
    height: 200px;
    float: left;
    margin: auto;
    margin-right: 5vh;
    margin-top: 30px;
    border: 1px solid rgb(25, 151, 255);
}

.survey-card:hover{
    position: relative;
    right: 5px;
    top: 5px;
}

.addimg{
    text-align: center;
    margin-top: 20px;
}

.btn-remove-update{
    text-align: right;
}

.remove{
    width: 30px;
    height: 30px;
    /* background: url(../img/垃圾桶.png); */
    background-image: url(../img/垃圾桶.png);
    background-size: 30px;
    background-position:center;
    background-repeat:no-repeat;
    border: none;
    background-color: rgba(0, 0, 0, 0);
}

.update{
    width: 30px;
    height: 30px;
    /* background: url(../img/垃圾桶.png); */
    background-image: url(../img/修改_编辑.png);
    background-size: 30px;
    background-position:center;
    background-repeat:no-repeat;
    border: none;
    background-color: rgba(0, 0, 0, 0);
}

.datatable{
    width: 30px;
    height: 30px;
    /* background: url(../img/垃圾桶.png); */
    background-image: url(../img/数据.png);
    background-size: 30px;
    background-position:center;
    background-repeat:no-repeat;
    border: none;
    background-color: rgba(0, 0, 0, 0);
}

.share{
    width: 30px;
    height: 30px;
    background-image: url(../img/分享.png);
    background-size: 30px;
    background-position:center;
    background-repeat:no-repeat;
    border: none;
    background-color: rgba(0, 0, 0, 0);
}

.a_lable{
    color: black;

}

.a_lable:hover{
    color: rgb(25, 151, 255);

}

.users{
    float: right;
    margin-right: 10vw;
    margin-top: 10px;
    position: relative;
    display: inline-block;
}

.users img{
    width: 40px;
    height: 40px; 
}

.users img:hover{
    position: relative;
    top: 2px;
    right: 2px;
}

.content:hover .dropdown-content {
    display: block;
}

@media screen and (max-width: 375px) { /*当屏幕尺寸小于600px时，应用下面的CSS样式*/
    .a-style {
        font-size: 4vw;
    }
  }